- Time:May 18, 2023
Corundum brick is a high-grade refractory material mainly made of alumina (Al2O3). The following are some main physical and chemical indicators of corundum bricks:
1.Common specifications and density
Common corundum brick specifications are 230*114*65mm, 230*114*75mm, etc.; the common density is between 3.0~3.5g/cm³.
2.Compressive strength
usually in the range of 100-250MPa, its compressive performance is better.
3.Refractoriness
It can withstand extremely high temperature to above 2200℃, which is more resistant to high temperature than ordinary silicate, silicon carbide and other materials.
4.Corrosion resistance
Corundum bricks have strong resistance to acid and alkali corrosion, and will not corrode and deform quickly even if they come into contact with acid and alkali media.
5.Coefficient of thermal expansion
small thermal expansion coefficient and good thermal stability, so it is suitable for high temperature applications.
6.Thermal conductivity
The thermal conductivity of corundum bricks is low, which can effectively prevent heat leakage and ensure the energy-saving performance of equipment.
In short, corundum bricks have the advantages of high refractoriness, strong compression and erosion resistance, good thermal stability, and low thermal conductivity. These characteristics make corundum bricks widely used in high temperature equipment insulation and furnace components in metallurgy, chemical industry, electric power, ceramics, construction and other fields.
